THE CORX SMUT 



203 



When one of these spores comes m contact with a 

 drop of water it soon germinates by sending ont a little 

 tnbe, which has the power of developing certain second- 

 ary spores, called sjjoridia. The sporidia themselves 

 have the power of germinating, under favorable condi- 

 tions, and in a liquid containing sufficient organic mat- 



FIG. 84. PART OF SMrTTZD EAIi OF C01t> . 



ter for their nourish ment (manure water, for example), 

 they can continue growing and multiplying for an indef- 

 inite period. It is believed, by some authors, that these 

 sporidia may develop in the barnyard, from the spores 

 which find their way to the manure pile, and be carried 



